using System;
using System.Linq;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using SimApi.Communications;
using SimApi.Exceptions;

namespace SimApi.Attributes;

/// <summary>
/// 检测登录中间件
/// </summary>
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public class SimApiAuthAttribute : ActionFilterAttribute
{
    private string[] Types { get; }


    //默认是user登录类型
    public SimApiAuthAttribute()
    {
        Types = new[] { "user" };
    }

    //只检测一种用户类型的快捷方式
    public SimApiAuthAttribute(string type)
    {
        Types = type.Split(",");
    }

    //设定特定类型的检测
    public SimApiAuthAttribute(string[] types)
    {
        Types = types;
    }

    //只检测一种用户类型的快捷方式
    public SimApiAuthAttribute(string type, string url)
    {
        Types = new[] { type };
        new HttpPostAttribute(url);
    }

    public override void OnActionExecuting(ActionExecutingContext context)
    {
        var loginInfo = (SimApiLoginItem)context.HttpContext.Items["LoginInfo"];
        //检测是否登录
        if (loginInfo == null)
        {
            throw new SimApiException(401);
        }
        //检测用户类型
        if (!Types.Intersect(loginInfo.Type).Any())
        {
            throw new SimApiException(403);
        }
    }
}